screen.css: various improvements
screen.css: various improvements

mrlundis/wymeditor-legacy,mrlundis/wymeditor-legacy,samuelcole/wymeditor,samuelcole/wymeditor,samuelcole/wymeditor,samuelcole/wymeditor,samuelcole/wymeditor,mrlundis/wymeditor-legacy,mrlundis/wymeditor-legacy,samuelcole/wymeditor